Due to the pollution of chemical waste, the creatures in "Longtan Lake" in a Southeast Asian country have produced terrible mutations. At the same time, under the leadership of local guide He Chao, a group of people from China embarked on an adventure tour of Longtan Lake. Along the way, everyone encountered various strange phenomena, and even encountered attacks by giant beasts. In the end, how will they step through the dangers and defeat the beasts to escape from the danger.

During the reign of Emperor Renzong of the Northern Song Dynasty, there was a water monster on the banks of the Bianhe River. The Kaifeng government was instructed to send its saber-bearing guard Zhan Zhao to pursue the clues. They deduce that the beast is made of a machine and, with Deng's introduction, they go to the Qiankun Palace, the residence of the most famous machine master, Sheng Luban

A mysterious murder occurred in a forest farm near Jiangzhou City . However, behind this seemingly simple revenge murder, there is a confusing story. Detectives Yu and Cui Xiaotian conducted an in-depth investigation and gradually discovered that all this seemed to be related to the suspect Guo Haisheng's wife who had been missing for ten years.